<?php

/**
 * Created by PhpStorm.
 * User: Administrator
 * Date: 2019\6\16 0016
 * Time: 15:24
 */
namespace BigVideo\IMooc\Canvas;

/**
 * 装饰器接口
 * Interface DrawDecorator
 * @package BigVideo\IMooc\Canvas
 */
interface DrawDecorator
{
    public function beforeDraw();
    public function afterDraw();
}











